The potential breakthrough didn’t come without some danger to the researchers, however. To get the venom, researchers from University of Queensland and Monash University hunted for funnel spiders, one of the deadliest in the world, by digging up their burrows on Australia’s Fraser Island.

Once the arachnids were brought back to the lab, they’re “milked” with a pipette after the spiders are given a mild, non-lethal electric shock, according to the BBC.

Researchers say it’s too early to tell if the treatment could help humans.